3894147072 has 72 divisors (see below), whose sum is σ = 11247064920. Its totient is φ = 1298042880.

The previous prime is 3894147067. The next prime is 3894147073. The reversal of 3894147072 is 2707414983.

It is a tau number, because it is divible by the number of its divisors (72).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3894147073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 87204 + ... + 124067.

It is an arithmetic number, because the mean of its divisors is an integer number (156209235).

Almost surely, 2^3894147072 is an apocalyptic number.

3894147072 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3894147072 is an abundant number, since it is smaller than the sum of its proper divisors (7352917848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3894147072 is a wasteful number, since it uses less digits than its factorization.

3894147072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211299 (or 211276 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 3894147072 is about 62403.1014613857. The cubic root of 3894147072 is about 1573.2730980163.

The spelling of 3894147072 in words is "three billion, eight hundred ninety-four million, one hundred forty-seven thousand, seventy-two".